CN108169811A - A kind of automobile-used water sensor and vehicle falling into water escape system - Google Patents
A kind of automobile-used water sensor and vehicle falling into water escape system Download PDFInfo
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- CN108169811A CN108169811A CN201810186734.1A CN201810186734A CN108169811A CN 108169811 A CN108169811 A CN 108169811A CN 201810186734 A CN201810186734 A CN 201810186734A CN 108169811 A CN108169811 A CN 108169811A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 152
- 238000007654 immersion Methods 0.000 claims abstract description 46
- 239000011521 glass Substances 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 15
- 206010013647 Drowning Diseases 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 230000002452 interceptive effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 27
- 230000035945 sensitivity Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 230000006870 function Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000002791 soaking Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R2021/0002—Type of accident
- B60R2021/0016—Fall in water
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- Engineering & Computer Science (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention discloses a kind of automobile-used water sensor and vehicle falling into water escape system, is related to sensor detecting technical field, solves the problems, such as that immersion detection sensitivity is poor in the prior art, accuracy is not high.The automobile-used water sensor component includes sensor body and the fixed shell for fixing sensor body；Wherein, sensor body includes infrared transceiver module, data processing module and the first base being oppositely arranged and reflective glass, infrared transceiver module are fixed in first base；Infrared transceiver module receives the reflection infrared light formed after reflective glass reflects for emitting outgoing infrared light；Data processing module includes data processor and memory, and data processor interconnects respectively with infrared transceiver module and memory.The vehicle falling into water escape system includes the automobile-used water sensor that above-mentioned technical proposal is carried.Automobile-used water sensor provided by the invention detects for vehicle falling into water.
Description
Technical Field
The invention relates to the technical field of sensor detection, in particular to a vehicular water sensor and a vehicular water falling escape system.
Background
Along with the improvement of people's consciousness of automobile safety, more and more automobiles will be installed the lifesaving system that falls into water to make the automobile open the lifesaving system that falls into water the very first time after the accident falls into water, make the driver can flee for one's life smoothly, foresee, install the lifesaving system that falls into water automobile will be widely promoted, and market prospect is very considerable. The drowning life-saving system generally comprises two parts, namely a drowning detection device and a life-saving device, wherein the accuracy and the sensitivity of the drowning detection are important technical indexes of the drowning detection device and become main reference bases for starting the life-saving device.
The existing drowning detection device is generally realized by using a water level sensor or a submergence detection circuit, for example, when the drowning detection device is the water level sensor, the principle that the water pressure detected after an automobile falls into water is inevitably greater than the water pressure when the automobile does not fall into water is utilized, so that whether the automobile falls into water is judged; when the water falling detection device is a water immersion detection circuit, the two metal water immersion detection ends are respectively and correspondingly connected with the positive electrode and the negative electrode, when water is immersed between the two metal water immersion detection ends, water can be ionized due to the voltage existing between the two metal water immersion detection ends, the two metal water immersion detection ends are conducted, and then corresponding electrical property change is detected, so that the automobile can be judged to fall into water.
However, when the water level sensor is used as the water level sensor, the water level sensor is used for measuring the height of the water level, so that whether the automobile falls into the water can be judged only when the water level sensor is completely immersed into the water, in other words, the automobile cannot be judged to fall into the water at the first time when the automobile falls into the water, so that the judgment section process adopting the water level sensor is slow, the sensitivity is poor, and precious time for starting the lifesaving device at the first time is wasted; when the water falling detection device is a water immersion detection circuit, due to the fact that the two metal water immersion detection ends lack necessary protection devices, water splashing in rainy days can be mistakenly judged as that the automobile falls into water, and therefore the lifesaving device is started by mistake, and therefore detection accuracy is not high.
Disclosure of Invention
The invention aims to provide a vehicle water immersion sensor and a vehicle water immersion escape system, which solve the problems of poor sensitivity and low accuracy of water immersion detection in the prior art.
In order to achieve the above object, an aspect of the present invention provides a water sensor assembly for a vehicle, including a sensor body and a fixing case for fixing the sensor body; wherein,
the sensor body comprises an infrared receiving and transmitting module, a data processing module, a first base and a reflecting glass sheet which are oppositely arranged, and the infrared receiving and transmitting module is fixed on the first base;
the infrared receiving and transmitting module is used for transmitting emergent infrared rays and receiving reflected infrared rays formed after the reflected infrared rays are reflected by the reflecting glass sheet;
the data processing module comprises a data processor and a memory, and the data processor is respectively in interactive connection with the infrared transceiver module and the memory; the memory is used for storing the parameters of the reflected infrared light rays when the infrared light rays are in a water-free immersion state to obtain standard parameters; the data processor is used for obtaining the absolute difference value between the parameter of the reflected infrared ray at the current moment and the standard parameter and outputting a judgment result at the same time,
when the absolute difference value is within the error allowable range, judging that the result is a water-free immersion state;
and when the absolute difference is not within the error allowable range, judging that the water immersion state exists.
Preferably, the infrared transceiver module comprises at least one infrared light emitter and an infrared light receiver, and the infrared light emitter and the infrared light receiver are respectively and interactively connected with the data processor;
the infrared light emitter is used for emitting outgoing infrared light rays with corresponding parameters according to the instruction of the data processor;
the infrared light receiver is used for receiving reflected infrared light formed after the reflected infrared light is reflected by the reflecting glass sheet and outputting parameters of the reflected infrared light to the data processor.
Further, the fixed shell comprises a shell body and a sensor support body which is arranged in the shell body and used for fixing the sensor body;
the sensor support body is a cavity, and the sensor body is detachably arranged in the cavity;
the shell body comprises a cap-shaped base and a sealing cover plate detachably connected with the cap-shaped base; the cap-shaped base is internally provided with a first supporting body for supporting the cavity body; and a second supporting body is arranged on the sealing cover plate, and the first supporting body and the second supporting body are used for matching and fixing the cavity body.
Preferably, cap-shaped base includes the cap body and follows the brim of a hat that the cap body set up, be equipped with a plurality of mounting holes that are used for the installation fixed on the brim of a hat, be equipped with at least one inhalant canal on the cap body.
Preferably, the water inlet channel and the mounting hole are arranged on the same plane, and the water inlet channel and the axis of the cap body form an angle of 45 degrees.
Preferably, the cap-shaped base further comprises a filter screen arranged in the cap body, and the filter screen covers the water inlet channel.
Compared with the prior art, the water sensor assembly provided by the invention has the following beneficial effects:
in the water sensor assembly provided by the invention, a sensor body consists of an infrared transceiver module, a data processing module, a first base and a reflecting glass slide which are oppositely arranged, wherein the data processing module comprises a data processor and a memory, the infrared transceiver module and the data processor are respectively in interactive connection, and the data processor is in interactive connection with the memory; when the water-free immersion state is realized, the data processor is utilized to transmit an instruction to the infrared receiving and transmitting module, so that the infrared receiving and transmitting module sends a beam of emergent infrared light, the reflected infrared light is formed after being reflected by the oppositely arranged reflecting glass slides, the reflected infrared light can be received by the infrared receiving and transmitting module and is output to the data processor to be processed to obtain parameters of the reflected infrared light, and the memory stores the parameters of the reflected infrared light in the water-free state to obtain standard parameters; similarly, when the water immersion state exists, the data processor obtains the parameter of the infrared ray reflected at the current moment, at the moment, the data processor calculates the absolute difference value between the parameter of the infrared ray reflected at the current moment and the standard parameter, and judges whether the absolute difference value is within the error allowable range or not, and when the absolute difference value is within the error allowable range, the water immersion state is judged to be the non-water immersion state; and when the water content is not within the error allowable range, the water immersion state is judged.
Therefore, the standard parameters are obtained according to actual measurement of the current environment, so that the standard parameters can accurately reflect the parameters of the reflected infrared light rays when no water is immersed in the current environment, the absolute difference value between the parameters of the reflected infrared light rays at the current moment and the standard parameters is obtained through real-time processing of the data processor, and then the absolute difference value is judged and analyzed to accurately obtain whether the current environment is immersed in water or not in real time. In addition, the error allowable range is set according to measurement statistics of multiple times of relevant experiments, so that the sensitivity of immersion detection can be improved on the premise of avoiding false alarm of immersion.
The invention provides a vehicle falling water escape system, which comprises the water sensor component in the technical scheme.
Preferably, the system further comprises a plurality of relays respectively connected with the data processor, and window motors connected with the relays, wherein the single relays are connected with the single window motors in a one-to-one correspondence manner;
the relay is used for controlling the window motor to open the window according to the window opening control signal sent by the data processor.
Preferably, the system further comprises a timing module interactively connected with the data processor, and when the data processor judges that the water immersion state exists, the timing module is used for recording the duration of the water immersion state and transmitting the duration information of the water immersion state to the data processor;
the data processor is further used for comparing the duration information with a preset duration, and when the duration information is smaller than the preset duration, judging that the automobile is not drowned; and when the duration information is not less than the preset duration, judging that the automobile falls into water, and sending window opening control signals to the relays.
Preferably, the system further comprises an LIN transceiver and a power module, wherein one end of the LIN transceiver is interactively connected with the data processor, the other end of the LIN transceiver is connected with an LIN bus, and the power module is electrically connected with the data processor;
the LIN transceiver is used for establishing communication with a vehicle-mounted communication system.
Compared with the prior art, the beneficial effects of the vehicle water falling escape system provided by the invention are the same as those of the vehicle water immersion sensor assembly provided by the technical scheme, and the detailed description is omitted here.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic perspective view of a vehicle immersion sensor assembly according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of the connection of the sensor body of FIG. 1;
fig. 4 is a schematic structural diagram of the infrared transceiver module in fig. 3.
Reference numerals:
11-data processor, 12-memory;
13-infrared receiving and transmitting module, 14-power module;
15-LIN transceiver, 16-reflective slide;
131-infrared light emitter, 132-infrared light receiver;
21-a cap-shaped base, 22-a sealing cover plate;
211-a first support, 212-a water inlet channel;
213-mounting hole, 214-water containing area;
221-second support, 222-wiring harness routing hole.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1 and 2, a water sensor assembly according to the present embodiment includes a sensor body and a fixing housing for fixing the sensor body; the sensor body comprises an infrared transceiver module 13, a data processing module, a first base and a reflecting glass sheet 16 which are oppositely arranged, and the infrared transceiver module 13 is fixed on the first base; the infrared receiving and transmitting module 13 is used for emitting infrared rays and receiving reflected infrared rays formed after the reflected infrared rays are reflected by the reflecting glass sheet 16; the data processing module comprises a data processor 11 and a memory 12, and the data processor 11 is respectively connected with the infrared transceiving module 13 and the memory 12 in an interactive mode; the memory 12 is used for storing parameters of reflected infrared light rays when the water is not immersed, so as to obtain standard parameters; the data processor 11 is configured to obtain an absolute difference between a parameter of the reflected infrared light at the current time and a standard parameter, and output a determination result, where the determination result is in a non-water-immersion state when the absolute difference is within an error allowable range; and when the absolute difference is not within the error allowable range, judging that the water is immersed.
In the water sensor assembly provided in this embodiment, the sensor body is composed of an infrared transceiver module 13, a data processing module, and a first base and a reflective glass sheet 16 which are arranged oppositely, wherein the data processing module includes a data processor 11 and a memory 12, the data processor 11 and the memory 12 are connected with each other by respectively connecting the infrared transceiver module 13 with the data processor 11, so that when the sensor is in a non-water immersion state, the data processor 11 sends an instruction to the infrared transceiver module 13, so that the infrared transceiver module 13 sends out a beam of outgoing infrared light, the reflected infrared light is formed after being reflected by the reflective glass sheet 16 which is arranged oppositely, the reflected infrared light can be received by the infrared transceiver module 13 and simultaneously output to the data processor 11 for processing to obtain parameters of the reflected infrared light, and the memory 12 stores the parameters of the reflected infrared light when the sensor is in the non-water state, obtaining standard parameters; similarly, when the water is immersed, the data processor 11 obtains the parameter of the infrared ray reflected at the current moment, at this time, the data processor 11 calculates the absolute difference value between the parameter of the infrared ray reflected at the current moment and the standard parameter, and judges whether the absolute difference value is within the error allowable range, and when the absolute difference value is within the error allowable range, the water is not immersed; and when the water content is not within the error allowable range, the water immersion state is judged. It should be explained that the absolute difference value described in the above embodiment is an absolute value of a difference between a parameter of the reflected infrared light at the current time and a standard parameter.
It can be seen that, since the standard parameter is actually measured according to the current environment, the standard parameter can accurately reflect the parameter of the reflected infrared light when no water is immersed in the current environment, and then the data processor 11 processes the parameter of the reflected infrared light at the current time and the absolute difference value of the standard parameter in real time, and then judges and analyzes the absolute difference value, so as to accurately obtain whether the current environment is immersed in water or not in real time. In addition, the error allowable range is set according to measurement statistics of multiple times of relevant experiments, so that the sensitivity of immersion detection can be improved as much as possible on the premise of avoiding false alarm of immersion.
It is understood that the sensitivity of the submersion detection has a large relationship with the set error allowable range, for example, the sensitivity of the submersion detection is higher when the set value of the error allowable range is smaller, and is lower otherwise. Therefore, in order to set the standard parameters and the allowable error range value in the above embodiment reasonably and accurately, the professional technicians respectively adjust and set the standard parameters and the allowable error range when the vehicle water sensor assembly leaves the factory, and the standard parameters and the allowable error range are kept as initial set values.
Specifically, referring to fig. 3 and fig. 4, the infrared transceiver module 13 in the above embodiment includes at least one infrared light emitter 131 and one infrared light receiver 132, and the infrared light emitter 131 and the infrared light receiver 132 are respectively connected to the data processor 11 in an interactive manner; the infrared light emitter 131 is used for emitting an outgoing infrared light ray with corresponding parameters according to an instruction of the data processor 11; the infrared light receiver 132 is configured to receive reflected infrared light formed after being reflected by the reflective glass 16, and output parameters of the reflected infrared light to the data processor 11.
In the specific implementation process, the number of the infrared light emitters 131 can be specifically set according to actual needs, and in this embodiment, specific limitations are not made on the number and the arrangement manner of the infrared light emitters 131, for example, please refer to fig. 4, the infrared light receiver 132 is fixed at the center of the first base, and 6 infrared light emitters 131 are arranged in a distributed manner around the infrared light receiver 132, and by using this arrangement manner, the concentrated irradiation of the infrared light is ensured, and the infrared light can be received by the infrared light receiver 132 after being reflected by the reflective glass sheet 16, so that the loss of reflected infrared light is reduced to the maximum extent, and the accuracy of the measurement result is ensured. Specifically, the infrared light emitter 131 may be a PWM-controlled LED infrared emitting lamp, and the infrared light receiver 132 may be an infrared receiving tube commonly used in the art.
Further, the fixed housing in the above embodiment includes a housing body and a sensor support body provided in the housing body for fixing the sensor body; the sensor support body is a cavity body, and the sensor body is detachably arranged in the cavity body; the shell body comprises a cap-shaped base 21 and a sealing cover plate 22 detachably connected with the cap-shaped base 21; wherein, a first supporting body 211 for supporting the hollow cavity body is arranged in the cap-shaped base 21; the sealing cover plate 22 is provided with a second supporting body 221, and the first supporting body 211 and the second supporting body 221 are used for matching and fixing the cavity body. In addition, the sealing cover plate 22 is also provided with a wiring harness wiring hole 222.
In the specific implementation process, the structures of the cavity are various, and for easy understanding, the embodiment exemplarily provides a specific structure:
the cavity body includes the cavity body and can dismantle the cavity body apron of connection, at the in-process of installation sensor body, can place the sensor body in the cavity body that corresponds is originally internal, then the joint cooperation through the cavity body apron, make this integument of sensor firmly fix at the cavity body originally internally, then place the cavity body on first supporter 211, make the bottom surface contact of first supporter 211 and cavity body, utilize the joint cooperation of sealed apron 22 after that, make the second supporter 221 of sealed apron 22 support the cavity body apron, through first supporter 211, the interference fit of cavity body and second supporter 221, can be with the fixed of the cavity body firmly.
Can know through above-mentioned implementation process, the cavity body adopts above-mentioned detachable to set up the structure, can only change the sensor body that sets up in the cavity body when the sensor body breaks down, and other parts can use repeatedly, have practiced thrift the maintenance cost. In addition, because first supporter 211, the cavity body and second supporter 221 all adopt interference fit, realized dismantling and changing of the cavity body on the one hand, on the other hand has guaranteed the fastness that the cavity body is fixed, avoided because the cavity body is not good because of fixed fastness, and the emergence that leads to the fixed condition of dislocation of cavity body, further guaranteed reflection infrared ray measurement result's accuracy. In order to improve the sealing performance of the fixed casing and achieve interference fit, the hollow cavity and the casing body in this embodiment may be made of an elastic material, such as epdm rubber.
Further, referring to fig. 1 and fig. 2, the cap-shaped base 21 in the above embodiment includes a cap body and a brim disposed along the cap body, the brim is provided with a plurality of mounting holes 213 for mounting and fixing, and the cap body is provided with at least one water inlet channel 212. The water inlet channel 212 and the mounting hole 213 are arranged on the same plane, and the water inlet channel 212 and the axis of the cap body form an angle of 45 degrees.
In the process of actual operation, this embodiment does not restrict the setting number of inlet channels 212 and the setting number of mounting holes 213, for example, please refer to fig. 4, 3 mounting holes 213 and 3 inlet channels 212 are provided, and the setting position of inlet channels 212 corresponds to the position of ir transceiver module 13, compare in setting inlet channels 212 to 90 degrees (perpendicular to the ground), in this embodiment, setting inlet channels 212 to be 45 degrees can block the rainwater that part splashes into accidentally from entering the fixed casing, avoid data processor 11 misjudge to be that there is water to soak, and then promote the accuracy of the water soaking judgment result.
It is worth noting that once the vehicle-mounted storage battery enters water after the automobile falls into water, the automobile stops supplying power to the vehicle-mounted electric appliance, and the corresponding vehicle-mounted safety system cannot be started due to power failure, so that a lot of inconvenience is brought to escape of people in the automobile, for example: electric window can't open after the outage, and in order to avoid the emergence of above-mentioned condition, this embodiment passes through the mode of thread tightening and fixes above-mentioned automobile-used water sensor subassembly below the car storage battery position, for example, on the vehicle chassis, can make automobile-used water sensor subassembly can output the judgement signal that soaks before on-vehicle storage battery is intake like this, has guaranteed that personnel in the car can take the measure of saving oneself the very first time. In addition, in the process of installing the vehicle immersion sensor assembly, the plane of the water inlet channel 212 is set to be parallel to the ground so as to improve the accuracy of immersion detection.
Preferably, the cap-shaped base 21 in the above embodiment further includes a filter net disposed in the cap body, and the filter net covers the water inlet passage 212. Through the setting of filter screen, can filter the impurity that mix with in getting into the soaking in the fixed casing, avoid impurity to cause the influence to reflection infrared light, guarantee reflection infrared light measuring result's accuracy, and then promoted the accuracy of soaking judgement result.
It should be added that, referring to fig. 2, the space from the water inlet channel 212 to the cavity is generally called as a water containing area 214, and only when the water containing area 214 is filled with the water, the water can be fully contacted with the reflective glass sheet 16, so that the parameters of the reflected infrared ray formed by the reflected infrared ray of the emergent infrared ray by the reflective glass sheet 16 are greatly changed, and the larger the absolute difference value is; the higher the height of the water containing area 214 is set, the longer the time taken for the water to flood the water containing area 214 is, so that the longer the time taken from the water immersion state to the time taken for the data sensor to output the water immersion judgment result is, that is, the lower the sensitivity of the water immersion detection is; conversely, the lower the height setting of the water containing region 214, the higher the sensitivity of the water intrusion detection; since the height of the water containing region 214 in this embodiment is slightly equal to the height of the first support 211, the sensitivity of the water intrusion detection can be adjusted by adjusting the height of the first support 211, and in order to avoid the occurrence of the data sensor mistakenly judging that the water intrusion occurs due to the rain water intrusion, the height of the first support 211 is set to 10mm, for example.
Example two
The embodiment of the invention provides a vehicle falling water escape system which comprises the vehicle water sensor assembly in the first embodiment.
The vehicle falling water escape system in the embodiment further comprises a plurality of relays respectively connected with the data processor 11, and window motors connected with the relays, wherein the single relays are connected with the single window motors in a one-to-one correspondence manner; the relay is used for controlling the window motor to open the window according to the window opening control signal sent by the data processor 11.
In the specific implementation process, when the judgment result output by the data processor 11 is that the vehicle is in a water immersion state, the data processor 11 outputs windowing control signals to all the relays at the first time, and after receiving the windowing control signals, the relays respectively control the corresponding vehicle window motors to open the vehicle windows, so that people in the vehicle can escape from the vehicle windows emergently. In addition, compare in prior art only set up all window motors of a relay control, this embodiment all is provided with the relay at each window motor, can avoid only setting up the condition emergence that leads to all windows to open after a relay breaks down among the prior art.
Further, in the vehicle water falling escape system of the above embodiment, the system further includes a timing module interactively connected to the data processor 11, and when the data processor 11 determines that the water immersion state exists, the timing module is configured to record duration of the water immersion state and transmit duration information of the water immersion state to the data processor 11; the data processor 11 is further configured to compare the duration information with a preset duration, and determine that the automobile is not drowned when the duration information is smaller than the preset duration; when the time length information is not less than the preset time length, the automobile is judged to fall into water, and window opening control signals are sent to the relays.
In the specific implementation process, the preset time period can be set by an operator, for example, the preset time period is set to 3 seconds, so that the situation that the data processor 11 misjudges that the automobile falls into water due to accidental splashing of rainwater can be avoided, and even if the rainwater accidentally splashes into the water containing area 214, a small amount of rainwater can be instantly (less than 3 seconds) separated from the reflective slide 16 due to the self gravity, so that the data processor 11 cannot be misjudged; in addition, if the automobile falls into water, the river water will quickly flow into the water holding area 214, and the time for the river water to flow into the water holding area 214 is certainly longer than 3 seconds as the automobile sinks continuously, and at this time, the data processor 11 can output an accurate judgment result in a short time and reserve enough self-rescue time for the personnel in the automobile. Therefore, the accuracy of judging the automobile falling into the water is further improved by comparing the falling-into-water time length information with the preset time length.
It should be noted that the functions of the timing module and the data processor 11 can be realized by the existing control element or control circuit, and in practical applications, a single chip microcomputer capable of simultaneously realizing the data processing function and the timing function, such as a single chip microcomputer of the UPD78F1833 type, can be selected for simplifying the circuit. It should be emphasized that, in this embodiment, only the connection relationship between the single chip microcomputer and other hardware is improved, and the improvement of a built-in program in the single chip microcomputer is not involved, where the built-in program is a common program with timing and control functions in the prior art, and the content of the built-in program is not described herein again.
It should be added that, in order to enable the vehicle drowning escape system to support the function of online diagnosis of the vehicle, the vehicle drowning escape system in the above embodiment further includes an LIN transceiver 15 and a power module 14, one end of the LIN transceiver 15 is interactively connected with the data processor 11, the other end of the LIN transceiver 15 is connected with the LIN bus, and the power module 14 is electrically connected with the data processor 11; the LIN transceiver 15 is used to establish communication with the on-board communication system. The LIN transceiver 15 may be a LIN transceiver 15 supporting a TP2.0 protocol and having a model number TJA1021T, and the power module 14 employs a power module 14 having a supply voltage of 9V-16V and a model number TPs7a 6650. This power module 14 can be the independent power supply of the automobile-used water sensor subassembly in above-mentioned embodiment, prevents to lead to the emergence of the unable normal behavior of automobile-used water sensor subassembly because of on-vehicle storage battery outage.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A vehicle water sensor assembly is characterized by comprising a sensor body and a fixed shell used for fixing the sensor body; wherein,
the sensor body comprises an infrared receiving and transmitting module, a data processing module, a first base and a reflecting glass sheet which are oppositely arranged, and the infrared receiving and transmitting module is fixed on the first base;
the infrared receiving and transmitting module is used for transmitting emergent infrared rays and receiving reflected infrared rays formed after the reflected infrared rays are reflected by the reflecting glass sheet;
the data processing module comprises a data processor and a memory, and the data processor is respectively in interactive connection with the infrared transceiver module and the memory; the memory is used for storing the parameters of the reflected infrared light rays when the infrared light rays are in a water-free immersion state to obtain standard parameters; the data processor is used for obtaining the absolute difference value between the parameter of the reflected infrared ray at the current moment and the standard parameter and outputting a judgment result at the same time,
when the absolute difference value is within the error allowable range, judging that the result is a water-free immersion state;
and when the absolute difference is not within the error allowable range, judging that the water immersion state exists.
2. The vehicular water sensor assembly of claim 1, wherein the infrared transceiver module comprises at least one infrared light emitter and infrared light receiver, each of the infrared light emitter and infrared light receiver being operatively coupled to the data processor;
the infrared light emitter is used for emitting outgoing infrared light rays with corresponding parameters according to the instruction of the data processor;
the infrared light receiver is used for receiving reflected infrared light formed after the reflected infrared light is reflected by the reflecting glass sheet and outputting parameters of the reflected infrared light to the data processor.
3. The vehicular water sensor assembly according to claim 1 or 2, wherein the stationary housing comprises a housing body and a sensor support provided in the housing body for fixing the sensor body;
the sensor support body is a cavity, and the sensor body is detachably arranged in the cavity;
the shell body comprises a cap-shaped base and a sealing cover plate detachably connected with the cap-shaped base; the cap-shaped base is internally provided with a first supporting body for supporting the cavity body; and a second supporting body is arranged on the sealing cover plate, and the first supporting body and the second supporting body are used for matching and fixing the cavity body.
4. The vehicular water sensor assembly according to claim 3, wherein the cap-shaped base comprises a cap body and a brim arranged along the cap body, the brim is provided with a plurality of mounting holes for mounting and fixing, and the cap body is provided with at least one water inlet channel.
5. The vehicular water sensor assembly according to claim 4, wherein the water inlet channel is coplanar with the mounting hole, and the water inlet channel forms an angle of 45 degrees with the axis of the cap body.
6. The vehicular water sensor assembly of claim 3 or 4, wherein the cap base further comprises a filter screen disposed within the cap body, the filter screen covering the water inlet channel.
7. A vehicle drowning escape system comprising the water sensor assembly of any of claims 1-6.
8. The vehicle drowning escape system according to claim 7, further comprising a plurality of relays respectively connected to the data processor, and window motors connected to the relays, wherein a single relay is connected to a single window motor in a one-to-one correspondence;
the relay is used for controlling the window motor to open the window according to the window opening control signal sent by the data processor.
9. The vehicle drowning escape system according to claim 8, further comprising a timing module interactively connected with the data processor, wherein when the data processor determines that the water immersion state exists, the timing module is configured to record duration of the water immersion state and transmit duration information of the water immersion state to the data processor;
the data processor is further used for comparing the duration information with a preset duration, and when the duration information is smaller than the preset duration, judging that the automobile is not drowned; and when the duration information is not less than the preset duration, judging that the automobile falls into water, and sending window opening control signals to the relays.
10. The vehicle drowning escape system according to claim 7, further comprising a LIN transceiver and a power module, wherein one end of the LIN transceiver is interactively connected with the data processor, the other end of the LIN transceiver is connected with a LIN bus, and the power module is electrically connected with the data processor;
the LIN transceiver is used for establishing communication with a vehicle-mounted communication system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810186734.1A CN108169811A (en) | 2018-03-07 | 2018-03-07 | A kind of automobile-used water sensor and vehicle falling into water escape system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810186734.1A CN108169811A (en) | 2018-03-07 | 2018-03-07 | A kind of automobile-used water sensor and vehicle falling into water escape system |
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| Publication Number | Publication Date |
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| CN108169811A true CN108169811A (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810186734.1A Withdrawn CN108169811A (en) | 2018-03-07 | 2018-03-07 | A kind of automobile-used water sensor and vehicle falling into water escape system |
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| CN (1) | CN108169811A (en) |
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| CN110379132A (en) * | 2019-06-10 | 2019-10-25 | 高思涵 | The drowned intelligent alarm circuit of swimming |
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Application publication date: 20180615 |